package com.cn.wanxi.servlet.user;


import com.alibaba.fastjson.JSONObject;
import com.cn.wanxi.model.UserModel;
import com.cn.wanxi.service.IUserService;
import com.cn.wanxi.service.impl.UserServiceImpl;
import com.cn.wanxi.util.Tool;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/back/user/findById")
public class UserFindByIdServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        /**
         * 0，乱码
         * 1.拿到页面的数据
         * 2.封装数据对象--model
         * 3.调用service
         * 4.得到返回数据，反馈
         * 5.将得到的数据返回给前端
         * 6.因为前端是用json对象进行传输，所以后台必须以json对象传递给前台
         *
         */
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        String idString = req.getParameter("id");
        Integer id = Tool.stringToInt(idString);
        //        3.调用service
        IUserService iUserService = new UserServiceImpl();
        UserModel model = iUserService.findById(id);
        //        将得到的数据返回给前端
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("model", model);
        resp.getWriter().println(jsonObject);

    }
}
